add lab answers
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15
labcodes_answer/lab5_result/tools/boot.ld
Normal file
15
labcodes_answer/lab5_result/tools/boot.ld
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@@ -0,0 +1,15 @@
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OUTPUT_FORMAT("elf32-i386")
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OUTPUT_ARCH(i386)
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SECTIONS {
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. = 0x7C00;
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.startup : {
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*bootasm.o(.text)
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}
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.text : { *(.text) }
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.data : { *(.data .rodata) }
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/DISCARD/ : { *(.eh_*) }
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}
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95
labcodes_answer/lab5_result/tools/function.mk
Normal file
95
labcodes_answer/lab5_result/tools/function.mk
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@@ -0,0 +1,95 @@
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OBJPREFIX := __objs_
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.SECONDEXPANSION:
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# -------------------- function begin --------------------
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# list all files in some directories: (#directories, #types)
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listf = $(filter $(if $(2),$(addprefix %.,$(2)),%),\
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$(wildcard $(addsuffix $(SLASH)*,$(1))))
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# get .o obj files: (#files[, packet])
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toobj = $(addprefix $(OBJDIR)$(SLASH)$(if $(2),$(2)$(SLASH)),\
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$(addsuffix .o,$(basename $(1))))
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# get .d dependency files: (#files[, packet])
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todep = $(patsubst %.o,%.d,$(call toobj,$(1),$(2)))
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totarget = $(addprefix $(BINDIR)$(SLASH),$(1))
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# change $(name) to $(OBJPREFIX)$(name): (#names)
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packetname = $(if $(1),$(addprefix $(OBJPREFIX),$(1)),$(OBJPREFIX))
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# cc compile template, generate rule for dep, obj: (file, cc[, flags, dir])
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define cc_template
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$$(call todep,$(1),$(4)): $(1) | $$$$(dir $$$$@)
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@$(2) -I$$(dir $(1)) $(3) -MM $$< -MT "$$(patsubst %.d,%.o,$$@) $$@"> $$@
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$$(call toobj,$(1),$(4)): $(1) | $$$$(dir $$$$@)
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@echo + cc $$<
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$(V)$(2) -I$$(dir $(1)) $(3) -c $$< -o $$@
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ALLOBJS += $$(call toobj,$(1),$(4))
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endef
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# compile file: (#files, cc[, flags, dir])
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define do_cc_compile
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$$(foreach f,$(1),$$(eval $$(call cc_template,$$(f),$(2),$(3),$(4))))
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endef
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# add files to packet: (#files, cc[, flags, packet, dir])
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define do_add_files_to_packet
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__temp_packet__ := $(call packetname,$(4))
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ifeq ($$(origin $$(__temp_packet__)),undefined)
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$$(__temp_packet__) :=
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endif
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__temp_objs__ := $(call toobj,$(1),$(5))
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$$(foreach f,$(1),$$(eval $$(call cc_template,$$(f),$(2),$(3),$(5))))
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$$(__temp_packet__) += $$(__temp_objs__)
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endef
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# add objs to packet: (#objs, packet)
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define do_add_objs_to_packet
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__temp_packet__ := $(call packetname,$(2))
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ifeq ($$(origin $$(__temp_packet__)),undefined)
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$$(__temp_packet__) :=
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endif
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$$(__temp_packet__) += $(1)
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endef
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# add packets and objs to target (target, #packes, #objs[, cc, flags])
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define do_create_target
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__temp_target__ = $(call totarget,$(1))
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__temp_objs__ = $$(foreach p,$(call packetname,$(2)),$$($$(p))) $(3)
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TARGETS += $$(__temp_target__)
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ifneq ($(4),)
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$$(__temp_target__): $$(__temp_objs__) | $$$$(dir $$$$@)
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$(V)$(4) $(5) $$^ -o $$@
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else
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$$(__temp_target__): $$(__temp_objs__) | $$$$(dir $$$$@)
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endif
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endef
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# finish all
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define do_finish_all
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ALLDEPS = $$(ALLOBJS:.o=.d)
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$$(sort $$(dir $$(ALLOBJS)) $(BINDIR)$(SLASH) $(OBJDIR)$(SLASH)):
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@$(MKDIR) $$@
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endef
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# -------------------- function end --------------------
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# compile file: (#files, cc[, flags, dir])
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cc_compile = $(eval $(call do_cc_compile,$(1),$(2),$(3),$(4)))
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# add files to packet: (#files, cc[, flags, packet, dir])
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add_files = $(eval $(call do_add_files_to_packet,$(1),$(2),$(3),$(4),$(5)))
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# add objs to packet: (#objs, packet)
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add_objs = $(eval $(call do_add_objs_to_packet,$(1),$(2)))
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# add packets and objs to target (target, #packes, #objs, cc, [, flags])
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create_target = $(eval $(call do_create_target,$(1),$(2),$(3),$(4),$(5)))
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read_packet = $(foreach p,$(call packetname,$(1)),$($(p)))
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add_dependency = $(eval $(1): $(2))
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finish_all = $(eval $(call do_finish_all))
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3
labcodes_answer/lab5_result/tools/gdbinit
Normal file
3
labcodes_answer/lab5_result/tools/gdbinit
Normal file
@@ -0,0 +1,3 @@
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file bin/kernel
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target remote :1234
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break kern_init
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556
labcodes_answer/lab5_result/tools/grade.sh
Normal file
556
labcodes_answer/lab5_result/tools/grade.sh
Normal file
@@ -0,0 +1,556 @@
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#!/bin/sh
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verbose=false
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if [ "x$1" = "x-v" ]; then
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verbose=true
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out=/dev/stdout
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err=/dev/stderr
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else
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out=/dev/null
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err=/dev/null
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fi
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## make & makeopts
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if gmake --version > /dev/null 2>&1; then
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make=gmake;
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else
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make=make;
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fi
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makeopts="--quiet --no-print-directory -j"
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make_print() {
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echo `$make $makeopts print-$1`
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}
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## command tools
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awk='awk'
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bc='bc'
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date='date'
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grep='grep'
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rm='rm -f'
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sed='sed'
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## symbol table
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sym_table='obj/kernel.sym'
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## gdb & gdbopts
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gdb="$(make_print GDB)"
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gdbport='1234'
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gdb_in="$(make_print GRADE_GDB_IN)"
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## qemu & qemuopts
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qemu="$(make_print qemu)"
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qemu_out="$(make_print GRADE_QEMU_OUT)"
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if $qemu -nographic -help | grep -q '^-gdb'; then
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qemugdb="-gdb tcp::$gdbport"
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else
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qemugdb="-s -p $gdbport"
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fi
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## default variables
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default_timeout=30
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default_pts=5
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pts=5
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part=0
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part_pos=0
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total=0
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total_pos=0
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## default functions
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update_score() {
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total=`expr $total + $part`
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total_pos=`expr $total_pos + $part_pos`
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part=0
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part_pos=0
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}
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get_time() {
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echo `$date +%s.%N 2> /dev/null`
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}
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show_part() {
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echo "Part $1 Score: $part/$part_pos"
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echo
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update_score
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}
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show_final() {
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update_score
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echo "Total Score: $total/$total_pos"
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if [ $total -lt $total_pos ]; then
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exit 1
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fi
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}
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show_time() {
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t1=$(get_time)
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time=`echo "scale=1; ($t1-$t0)/1" | $sed 's/.N/.0/g' | $bc 2> /dev/null`
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echo "(${time}s)"
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}
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show_build_tag() {
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echo "$1:" | $awk '{printf "%-24s ", $0}'
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}
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show_check_tag() {
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echo "$1:" | $awk '{printf " -%-40s ", $0}'
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}
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show_msg() {
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echo $1
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shift
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if [ $# -gt 0 ]; then
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echo "$@" | awk '{printf " %s\n", $0}'
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echo
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fi
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}
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pass() {
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show_msg OK "$@"
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part=`expr $part + $pts`
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part_pos=`expr $part_pos + $pts`
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}
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fail() {
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show_msg WRONG "$@"
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part_pos=`expr $part_pos + $pts`
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}
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run_qemu() {
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# Run qemu with serial output redirected to $qemu_out. If $brkfun is non-empty,
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# wait until $brkfun is reached or $timeout expires, then kill QEMU
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qemuextra=
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if [ "$brkfun" ]; then
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qemuextra="-S $qemugdb"
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fi
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if [ -z "$timeout" ] || [ $timeout -le 0 ]; then
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timeout=$default_timeout;
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fi
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t0=$(get_time)
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(
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ulimit -t $timeout
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exec $qemu -nographic $qemuopts -serial file:$qemu_out -monitor null -no-reboot $qemuextra
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) > $out 2> $err &
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pid=$!
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# wait for QEMU to start
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sleep 1
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if [ -n "$brkfun" ]; then
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# find the address of the kernel $brkfun function
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brkaddr=`$grep " $brkfun\$" $sym_table | $sed -e's/ .*$//g'`
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(
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echo "target remote localhost:$gdbport"
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echo "break *0x$brkaddr"
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echo "continue"
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) > $gdb_in
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$gdb -batch -nx -x $gdb_in > /dev/null 2>&1
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# make sure that QEMU is dead
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# on OS X, exiting gdb doesn't always exit qemu
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kill $pid > /dev/null 2>&1
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fi
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}
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build_run() {
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# usage: build_run <tag> <args>
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show_build_tag "$1"
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shift
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if $verbose; then
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echo "$make $@ ..."
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fi
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$make $makeopts $@ 'DEFS+=-DDEBUG_GRADE' > $out 2> $err
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if [ $? -ne 0 ]; then
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echo $make $@ failed
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exit 1
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fi
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# now run qemu and save the output
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run_qemu
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show_time
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}
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check_result() {
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# usage: check_result <tag> <check> <check args...>
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show_check_tag "$1"
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shift
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# give qemu some time to run (for asynchronous mode)
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if [ ! -s $qemu_out ]; then
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sleep 4
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fi
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if [ ! -s $qemu_out ]; then
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fail > /dev/null
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echo 'no $qemu_out'
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else
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check=$1
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shift
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$check "$@"
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fi
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}
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check_regexps() {
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okay=yes
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not=0
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reg=0
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error=
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for i do
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if [ "x$i" = "x!" ]; then
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not=1
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elif [ "x$i" = "x-" ]; then
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reg=1
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else
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if [ $reg -ne 0 ]; then
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$grep '-E' "^$i\$" $qemu_out > /dev/null
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else
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$grep '-F' "$i" $qemu_out > /dev/null
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fi
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found=$(($? == 0))
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if [ $found -eq $not ]; then
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if [ $found -eq 0 ]; then
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msg="!! error: missing '$i'"
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else
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msg="!! error: got unexpected line '$i'"
|
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fi
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okay=no
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if [ -z "$error" ]; then
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error="$msg"
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else
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error="$error\n$msg"
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||||
fi
|
||||
fi
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not=0
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reg=0
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||||
fi
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||||
done
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||||
if [ "$okay" = "yes" ]; then
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pass
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||||
else
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||||
fail "$error"
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||||
if $verbose; then
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exit 1
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||||
fi
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||||
fi
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||||
}
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||||
|
||||
run_test() {
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||||
# usage: run_test [-tag <tag>] [-prog <prog>] [-Ddef...] [-check <check>] checkargs ...
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||||
tag=
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||||
prog=
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||||
check=check_regexps
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||||
while true; do
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||||
select=
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||||
case $1 in
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-tag|-prog)
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||||
select=`expr substr $1 2 ${#1}`
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eval $select='$2'
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||||
;;
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||||
esac
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||||
if [ -z "$select" ]; then
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||||
break
|
||||
fi
|
||||
shift
|
||||
shift
|
||||
done
|
||||
defs=
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while expr "x$1" : "x-D.*" > /dev/null; do
|
||||
defs="DEFS+='$1' $defs"
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||||
shift
|
||||
done
|
||||
if [ "x$1" = "x-check" ]; then
|
||||
check=$2
|
||||
shift
|
||||
shift
|
||||
fi
|
||||
|
||||
if [ -z "$prog" ]; then
|
||||
$make $makeopts touch > /dev/null 2>&1
|
||||
args="$defs"
|
||||
else
|
||||
if [ -z "$tag" ]; then
|
||||
tag="$prog"
|
||||
fi
|
||||
args="build-$prog $defs"
|
||||
fi
|
||||
|
||||
build_run "$tag" "$args"
|
||||
|
||||
check_result 'check result' "$check" "$@"
|
||||
}
|
||||
|
||||
quick_run() {
|
||||
# usage: quick_run <tag> [-Ddef...]
|
||||
tag="$1"
|
||||
shift
|
||||
defs=
|
||||
while expr "x$1" : "x-D.*" > /dev/null; do
|
||||
defs="DEFS+='$1' $defs"
|
||||
shift
|
||||
done
|
||||
|
||||
$make $makeopts touch > /dev/null 2>&1
|
||||
build_run "$tag" "$defs"
|
||||
}
|
||||
|
||||
quick_check() {
|
||||
# usage: quick_check <tag> checkargs ...
|
||||
tag="$1"
|
||||
shift
|
||||
check_result "$tag" check_regexps "$@"
|
||||
}
|
||||
|
||||
## kernel image
|
||||
osimg=$(make_print ucoreimg)
|
||||
|
||||
## swap image
|
||||
swapimg=$(make_print swapimg)
|
||||
|
||||
## set default qemu-options
|
||||
qemuopts="-hda $osimg -drive file=$swapimg,media=disk,cache=writeback"
|
||||
|
||||
## set break-function, default is readline
|
||||
brkfun=readline
|
||||
|
||||
default_check() {
|
||||
pts=7
|
||||
check_regexps "$@"
|
||||
|
||||
pts=3
|
||||
quick_check 'check output' \
|
||||
'memory management: default_pmm_manager' \
|
||||
'check_alloc_page() succeeded!' \
|
||||
'check_pgdir() succeeded!' \
|
||||
'check_boot_pgdir() succeeded!' \
|
||||
'PDE(0e0) c0000000-f8000000 38000000 urw' \
|
||||
' |-- PTE(38000) c0000000-f8000000 38000000 -rw' \
|
||||
'PDE(001) fac00000-fb000000 00400000 -rw' \
|
||||
' |-- PTE(000e0) faf00000-fafe0000 000e0000 urw' \
|
||||
' |-- PTE(00001) fafeb000-fafec000 00001000 -rw' \
|
||||
'check_slab() succeeded!' \
|
||||
'check_vma_struct() succeeded!' \
|
||||
'page fault at 0x00000100: K/W [no page found].' \
|
||||
'check_pgfault() succeeded!' \
|
||||
'check_vmm() succeeded.' \
|
||||
'page fault at 0x00001000: K/W [no page found].' \
|
||||
'page fault at 0x00002000: K/W [no page found].' \
|
||||
'page fault at 0x00003000: K/W [no page found].' \
|
||||
'page fault at 0x00004000: K/W [no page found].' \
|
||||
'write Virt Page e in fifo_check_swap' \
|
||||
'page fault at 0x00005000: K/W [no page found].' \
|
||||
'page fault at 0x00001000: K/W [no page found]' \
|
||||
'page fault at 0x00002000: K/W [no page found].' \
|
||||
'page fault at 0x00003000: K/W [no page found].' \
|
||||
'page fault at 0x00004000: K/W [no page found].' \
|
||||
'check_swap() succeeded!' \
|
||||
'++ setup timer interrupts'
|
||||
}
|
||||
|
||||
## check now!!
|
||||
|
||||
run_test -prog 'badsegment' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "badsegment".' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x0000000d General Protection' \
|
||||
' err 0x00000028' \
|
||||
- ' eip 0x008.....' \
|
||||
- ' esp 0xaff.....' \
|
||||
' cs 0x----001b' \
|
||||
' ss 0x----0023' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'divzero' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "divzero".' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x00000000 Divide error' \
|
||||
- ' eip 0x008.....' \
|
||||
- ' esp 0xaff.....' \
|
||||
' cs 0x----001b' \
|
||||
' ss 0x----0023' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'softint' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "softint".' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x0000000d General Protection' \
|
||||
' err 0x00000072' \
|
||||
- ' eip 0x008.....' \
|
||||
- ' esp 0xaff.....' \
|
||||
' cs 0x----001b' \
|
||||
' ss 0x----0023' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
pts=10
|
||||
|
||||
run_test -prog 'faultread' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "faultread".' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x0000000e Page Fault' \
|
||||
' err 0x00000004' \
|
||||
- ' eip 0x008.....' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'faultreadkernel' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "faultreadkernel".' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x0000000e Page Fault' \
|
||||
' err 0x00000005' \
|
||||
- ' eip 0x008.....' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'hello' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "hello".' \
|
||||
'Hello world!!.' \
|
||||
'I am process 2.' \
|
||||
'hello pass.'
|
||||
|
||||
run_test -prog 'testbss' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "testbss".' \
|
||||
'Making sure bss works right...' \
|
||||
'Yes, good. Now doing a wild write off the end...' \
|
||||
'testbss may pass.' \
|
||||
- 'trapframe at 0xc.......' \
|
||||
'trap 0x0000000e Page Fault' \
|
||||
' err 0x00000006' \
|
||||
- ' eip 0x008.....' \
|
||||
'killed by kernel.' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'pgdir' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "pgdir".' \
|
||||
'I am 2, print pgdir.' \
|
||||
'PDE(001) 00800000-00c00000 00400000 urw' \
|
||||
' |-- PTE(00002) 00800000-00802000 00002000 ur-' \
|
||||
' |-- PTE(00001) 00802000-00803000 00001000 urw' \
|
||||
'PDE(001) afc00000-b0000000 00400000 urw' \
|
||||
' |-- PTE(00004) afffc000-b0000000 00004000 urw' \
|
||||
'PDE(0e0) c0000000-f8000000 38000000 urw' \
|
||||
' |-- PTE(38000) c0000000-f8000000 38000000 -rw' \
|
||||
'pgdir pass.'
|
||||
|
||||
run_test -prog 'yield' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "yield".' \
|
||||
'Hello, I am process 2.' \
|
||||
'Back in process 2, iteration 0.' \
|
||||
'Back in process 2, iteration 1.' \
|
||||
'Back in process 2, iteration 2.' \
|
||||
'Back in process 2, iteration 3.' \
|
||||
'Back in process 2, iteration 4.' \
|
||||
'All done in process 2.' \
|
||||
'yield pass.'
|
||||
|
||||
|
||||
run_test -prog 'badarg' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "badarg".' \
|
||||
'fork ok.' \
|
||||
'badarg pass.' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
pts=10
|
||||
|
||||
run_test -prog 'exit' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "exit".' \
|
||||
'I am the parent. Forking the child...' \
|
||||
'I am the parent, waiting now..' \
|
||||
'I am the child.' \
|
||||
- 'waitpid [0-9]+ ok\.' \
|
||||
'exit pass.' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'spin' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "spin".' \
|
||||
'I am the parent. Forking the child...' \
|
||||
'I am the parent. Running the child...' \
|
||||
'I am the child. spinning ...' \
|
||||
'I am the parent. Killing the child...' \
|
||||
'kill returns 0' \
|
||||
'wait returns 0' \
|
||||
'spin may pass.' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
run_test -prog 'waitkill' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "waitkill".' \
|
||||
'wait child 1.' \
|
||||
'child 2.' \
|
||||
'child 1.' \
|
||||
'kill parent ok.' \
|
||||
'kill child1 ok.' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
pts=15
|
||||
|
||||
run_test -prog 'forktest' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "forktest".' \
|
||||
'I am child 31' \
|
||||
'I am child 19' \
|
||||
'I am child 13' \
|
||||
'I am child 0' \
|
||||
'forktest pass.' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.' \
|
||||
! - 'fork claimed to work [0-9]+ times!' \
|
||||
! 'wait stopped early' \
|
||||
! 'wait got too many' \
|
||||
! - 'user panic at .*'
|
||||
|
||||
pts=10
|
||||
run_test -prog 'forktree' -check default_check \
|
||||
'kernel_execve: pid = 2, name = "forktree".' \
|
||||
- '....: I am '\'''\' \
|
||||
- '....: I am '\''0'\' \
|
||||
- '....: I am '\'''\' \
|
||||
- '....: I am '\''1'\' \
|
||||
- '....: I am '\''0'\' \
|
||||
- '....: I am '\''01'\' \
|
||||
- '....: I am '\''00'\' \
|
||||
- '....: I am '\''11'\' \
|
||||
- '....: I am '\''10'\' \
|
||||
- '....: I am '\''101'\' \
|
||||
- '....: I am '\''100'\' \
|
||||
- '....: I am '\''111'\' \
|
||||
- '....: I am '\''110'\' \
|
||||
- '....: I am '\''001'\' \
|
||||
- '....: I am '\''000'\' \
|
||||
- '....: I am '\''011'\' \
|
||||
- '....: I am '\''010'\' \
|
||||
- '....: I am '\''0101'\' \
|
||||
- '....: I am '\''0100'\' \
|
||||
- '....: I am '\''0111'\' \
|
||||
- '....: I am '\''0110'\' \
|
||||
- '....: I am '\''0001'\' \
|
||||
- '....: I am '\''0000'\' \
|
||||
- '....: I am '\''0011'\' \
|
||||
- '....: I am '\''0010'\' \
|
||||
- '....: I am '\''1101'\' \
|
||||
- '....: I am '\''1100'\' \
|
||||
- '....: I am '\''1111'\' \
|
||||
- '....: I am '\''1110'\' \
|
||||
- '....: I am '\''1001'\' \
|
||||
- '....: I am '\''1000'\' \
|
||||
- '....: I am '\''1011'\' \
|
||||
- '....: I am '\''1010'\' \
|
||||
'all user-mode processes have quit.' \
|
||||
'init check memory pass.'
|
||||
|
||||
## print final-score
|
||||
show_final
|
||||
|
||||
58
labcodes_answer/lab5_result/tools/kernel.ld
Normal file
58
labcodes_answer/lab5_result/tools/kernel.ld
Normal file
@@ -0,0 +1,58 @@
|
||||
/* Simple linker script for the ucore kernel.
|
||||
See the GNU ld 'info' manual ("info ld") to learn the syntax. */
|
||||
|
||||
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
|
||||
OUTPUT_ARCH(i386)
|
||||
ENTRY(kern_entry)
|
||||
|
||||
SECTIONS {
|
||||
/* Load the kernel at this address: "." means the current address */
|
||||
. = 0xC0100000;
|
||||
|
||||
.text : {
|
||||
*(.text .stub .text.* .gnu.linkonce.t.*)
|
||||
}
|
||||
|
||||
PROVIDE(etext = .); /* Define the 'etext' symbol to this value */
|
||||
|
||||
.rodata : {
|
||||
*(.rodata .rodata.* .gnu.linkonce.r.*)
|
||||
}
|
||||
|
||||
/* Include debugging information in kernel memory */
|
||||
.stab : {
|
||||
PROVIDE(__STAB_BEGIN__ = .);
|
||||
*(.stab);
|
||||
PROVIDE(__STAB_END__ = .);
|
||||
BYTE(0) /* Force the linker to allocate space
|
||||
for this section */
|
||||
}
|
||||
|
||||
.stabstr : {
|
||||
PROVIDE(__STABSTR_BEGIN__ = .);
|
||||
*(.stabstr);
|
||||
PROVIDE(__STABSTR_END__ = .);
|
||||
BYTE(0) /* Force the linker to allocate space
|
||||
for this section */
|
||||
}
|
||||
|
||||
/* Adjust the address for the data segment to the next page */
|
||||
. = ALIGN(0x1000);
|
||||
|
||||
/* The data segment */
|
||||
.data : {
|
||||
*(.data)
|
||||
}
|
||||
|
||||
PROVIDE(edata = .);
|
||||
|
||||
.bss : {
|
||||
*(.bss)
|
||||
}
|
||||
|
||||
PROVIDE(end = .);
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.eh_frame .note.GNU-stack)
|
||||
}
|
||||
}
|
||||
43
labcodes_answer/lab5_result/tools/sign.c
Normal file
43
labcodes_answer/lab5_result/tools/sign.c
Normal file
@@ -0,0 +1,43 @@
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
int
|
||||
main(int argc, char *argv[]) {
|
||||
struct stat st;
|
||||
if (argc != 3) {
|
||||
fprintf(stderr, "Usage: <input filename> <output filename>\n");
|
||||
return -1;
|
||||
}
|
||||
if (stat(argv[1], &st) != 0) {
|
||||
fprintf(stderr, "Error opening file '%s': %s\n", argv[1], strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
printf("'%s' size: %lld bytes\n", argv[1], (long long)st.st_size);
|
||||
if (st.st_size > 510) {
|
||||
fprintf(stderr, "%lld >> 510!!\n", (long long)st.st_size);
|
||||
return -1;
|
||||
}
|
||||
char buf[512];
|
||||
memset(buf, 0, sizeof(buf));
|
||||
FILE *ifp = fopen(argv[1], "rb");
|
||||
int size = fread(buf, 1, st.st_size, ifp);
|
||||
if (size != st.st_size) {
|
||||
fprintf(stderr, "read '%s' error, size is %d.\n", argv[1], size);
|
||||
return -1;
|
||||
}
|
||||
fclose(ifp);
|
||||
buf[510] = 0x55;
|
||||
buf[511] = 0xAA;
|
||||
FILE *ofp = fopen(argv[2], "wb+");
|
||||
size = fwrite(buf, 1, 512, ofp);
|
||||
if (size != 512) {
|
||||
fprintf(stderr, "write '%s' error, size is %d.\n", argv[2], size);
|
||||
return -1;
|
||||
}
|
||||
fclose(ofp);
|
||||
printf("build 512 bytes boot sector: '%s' success!\n", argv[2]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
71
labcodes_answer/lab5_result/tools/user.ld
Normal file
71
labcodes_answer/lab5_result/tools/user.ld
Normal file
@@ -0,0 +1,71 @@
|
||||
/* Simple linker script for ucore user-level programs.
|
||||
See the GNU ld 'info' manual ("info ld") to learn the syntax. */
|
||||
|
||||
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
|
||||
OUTPUT_ARCH(i386)
|
||||
ENTRY(_start)
|
||||
|
||||
SECTIONS {
|
||||
/* Load programs at this address: "." means the current address */
|
||||
. = 0x800020;
|
||||
|
||||
.text : {
|
||||
*(.text .stub .text.* .gnu.linkonce.t.*)
|
||||
}
|
||||
|
||||
PROVIDE(etext = .); /* Define the 'etext' symbol to this value */
|
||||
|
||||
.rodata : {
|
||||
*(.rodata .rodata.* .gnu.linkonce.r.*)
|
||||
}
|
||||
|
||||
/* Adjust the address for the data segment to the next page */
|
||||
. = ALIGN(0x1000);
|
||||
|
||||
.data : {
|
||||
*(.data)
|
||||
}
|
||||
|
||||
PROVIDE(edata = .);
|
||||
|
||||
.bss : {
|
||||
*(.bss)
|
||||
}
|
||||
|
||||
PROVIDE(end = .);
|
||||
|
||||
|
||||
/* Place debugging symbols so that they can be found by
|
||||
* the kernel debugger.
|
||||
* Specifically, the four words at 0x200000 mark the beginning of
|
||||
* the stabs, the end of the stabs, the beginning of the stabs
|
||||
* string table, and the end of the stabs string table, respectively.
|
||||
*/
|
||||
|
||||
.stab_info 0x200000 : {
|
||||
LONG(__STAB_BEGIN__);
|
||||
LONG(__STAB_END__);
|
||||
LONG(__STABSTR_BEGIN__);
|
||||
LONG(__STABSTR_END__);
|
||||
}
|
||||
|
||||
.stab : {
|
||||
__STAB_BEGIN__ = DEFINED(__STAB_BEGIN__) ? __STAB_BEGIN__ : .;
|
||||
*(.stab);
|
||||
__STAB_END__ = DEFINED(__STAB_END__) ? __STAB_END__ : .;
|
||||
BYTE(0) /* Force the linker to allocate space
|
||||
for this section */
|
||||
}
|
||||
|
||||
.stabstr : {
|
||||
__STABSTR_BEGIN__ = DEFINED(__STABSTR_BEGIN__) ? __STABSTR_BEGIN__ : .;
|
||||
*(.stabstr);
|
||||
__STABSTR_END__ = DEFINED(__STABSTR_END__) ? __STABSTR_END__ : .;
|
||||
BYTE(0) /* Force the linker to allocate space
|
||||
for this section */
|
||||
}
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.eh_frame .note.GNU-stack .comment)
|
||||
}
|
||||
}
|
||||
29
labcodes_answer/lab5_result/tools/vector.c
Normal file
29
labcodes_answer/lab5_result/tools/vector.c
Normal file
@@ -0,0 +1,29 @@
|
||||
#include <stdio.h>
|
||||
|
||||
int
|
||||
main(void) {
|
||||
printf("# handler\n");
|
||||
printf(".text\n");
|
||||
printf(".globl __alltraps\n");
|
||||
|
||||
int i;
|
||||
for (i = 0; i < 256; i ++) {
|
||||
printf(".globl vector%d\n", i);
|
||||
printf("vector%d:\n", i);
|
||||
if ((i < 8 || i > 14) && i != 17) {
|
||||
printf(" pushl $0\n");
|
||||
}
|
||||
printf(" pushl $%d\n", i);
|
||||
printf(" jmp __alltraps\n");
|
||||
}
|
||||
printf("\n");
|
||||
printf("# vector table\n");
|
||||
printf(".data\n");
|
||||
printf(".globl __vectors\n");
|
||||
printf("__vectors:\n");
|
||||
for (i = 0; i < 256; i ++) {
|
||||
printf(" .long vector%d\n", i);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user